#
# MDEV-5225 Server crashes on CREATE USER|ROLE CURRENT_ROLE or DROP ROLE CURRENT_ROLE
#

# Where CURRENT_USER/CURRENT_ROLE is explicitly allowed by the grammar
# the error (if any) should be ER_CANNOT_USER
#
# Where it's not explicitly allowed, the error is ER_PARSE_ERROR,
# because CURRENT_USER/CURRENT_ROLE are reserved words and cannot be
# accepted as an identifier.
#

--source include/not_embedded.inc

create user foo@localhost;
grant create user on *.* to foo@localhost;
--change_user foo

--error ER_CANNOT_USER
create user current_user;
--error ER_CANNOT_USER
create user current_role;
--error ER_PARSE_ERROR
create role current_user;
--error ER_CANNOT_USER
create role current_role;
# this works
drop user current_user;
--error ER_PARSE_ERROR
drop user current_role;
--error ER_PARSE_ERROR
drop role current_user;
--error ER_CANNOT_USER
drop role current_role;
show warnings;

--change_user root

create role r1;
grant r1 to current_user;
set role r1;
select current_role();

--error ER_CANNOT_USER
create user current_role;
--error ER_CANNOT_USER
create role current_role;
--error ER_PARSE_ERROR
drop user current_role;
drop role current_role;